Determines the day-of-the-week number associated with a specified date value.
$weekday(date)
| date | a date, or an expression that evaluates to a date, in the form YYYYMMDD |
Character string.
This function extracts day information from standard date values. Date is often the system variable $Date.
$weekday(19981225)
Evaluates to "7".
$weekday($date+7)
Evaluates to "7" when $Date is 19981225.